P972Relationship between myocardial injury and early recurrence after pulmonary vein isolation in radiofrequency catheter ablation and cryoballoon ablation

Background: High sensitive cardiac troponin I (hs-TnI), subunit of cardiac troponin complex, is a sensitive and specific marker of myocardium injury as troponin T. Previous reports demonstrated that troponin I was more sensitive in hyperacute phase and less susceptible to hemolysis than troponin T. Several studies showed hs-TnI was associated with worse cardiovascular outcomes, but relationship between serum hs-TnI level in patients with atrial fibrillation (AF) after pulmonary vein isolation (PVI) and early recurrence remains unclear. Methods: We enrolled 141 patients with AF who underwent PVI (R group, radiofrequency catheter ablation, n=92; C group, cryoballoon ablation, n=49). We evaluated early recurrence (<3months) of AF (ERAF) in all study patients. We compared serum hs-TnI, high-sensitive C reactive protein (hs-CRP), white blood cell (WBC) at 48 hours after PVI and body temperature (BT, maximum value after PVI and at discharge) between patients with ERAF and those without ERAF in R group and C group, respectively.